framer-motion
Version:
A simple and powerful JavaScript animation library
76 lines (73 loc) • 2.85 kB
JavaScript
"use client";
import { jsx } from 'react/jsx-runtime';
import { invariant } from 'motion-utils';
import { forwardRef, useRef, useEffect } from 'react';
import { ReorderContext } from '../../context/ReorderContext.mjs';
import { motion } from '../../render/components/motion/proxy.mjs';
import { useConstant } from '../../utils/use-constant.mjs';
import { checkReorder } from './utils/check-reorder.mjs';
function ReorderGroupComponent({ children, as = "ul", axis = "y", onReorder, values, ...props }, externalRef) {
const Component = useConstant(() => motion[as]);
const order = [];
const isReordering = useRef(false);
const groupRef = useRef(null);
invariant(Boolean(values), "Reorder.Group must be provided a values prop", "reorder-values");
const context = {
axis,
groupRef,
registerItem: (value, layout) => {
// If the entry was already added, update it rather than adding it again
const idx = order.findIndex((entry) => value === entry.value);
if (idx !== -1) {
order[idx].layout = layout[axis];
}
else {
order.push({ value: value, layout: layout[axis] });
}
order.sort(compareMin);
},
updateOrder: (item, offset, velocity) => {
if (isReordering.current)
return;
const newOrder = checkReorder(order, item, offset, velocity);
if (order !== newOrder) {
isReordering.current = true;
onReorder(newOrder
.map(getValue)
.filter((value) => values.indexOf(value) !== -1));
}
},
};
useEffect(() => {
isReordering.current = false;
});
// Combine refs if external ref is provided
const setRef = (element) => {
groupRef.current = element;
if (typeof externalRef === "function") {
externalRef(element);
}
else if (externalRef) {
externalRef.current = element;
}
};
/**
* Disable browser scroll anchoring on the group container.
* When items reorder, scroll anchoring can cause the browser to adjust
* the scroll position, which interferes with drag position calculations.
*/
const groupStyle = {
overflowAnchor: "none",
...props.style,
};
return (jsx(Component, { ...props, style: groupStyle, ref: setRef, ignoreStrict: true, children: jsx(ReorderContext.Provider, { value: context, children: children }) }));
}
const ReorderGroup = /*@__PURE__*/ forwardRef(ReorderGroupComponent);
function getValue(item) {
return item.value;
}
function compareMin(a, b) {
return a.layout.min - b.layout.min;
}
export { ReorderGroup, ReorderGroupComponent };
//# sourceMappingURL=Group.mjs.map